/* ShelfHub 架集 — editorial discovery */
:root {
    color-scheme: light;
    --color-canvas: 240 244 247;
    --color-surface: 248 250 252;
    --color-elevated: 255 255 255;
    --color-ink: 22 32 40;
    --color-muted: 90 104 114;
    --color-line: 210 220 228;
    --color-brand: 15 110 100;
    --color-accent: 200 120 40;
    --color-success: 45 140 100;

    --c-quark: #f97316;
    --c-baidu: #2563eb;

    --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", ui-sans-serif, system-ui, sans-serif;
    --font-serif: "Noto Serif SC", "Songti SC", "SimSun", ui-serif, serif;

    --shadow-soft: 0 18px 50px rgb(20 40 50 / 0.08);
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --max: 96rem;
    --header-h: 4.25rem;

    --z-header: 100;
    --z-drawer: 200;
    --z-modal: 300;
    --z-toast: 400;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --dur: 220ms;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --color-canvas: 16 22 26;
    --color-surface: 24 30 34;
    --color-elevated: 32 40 46;
    --color-ink: 230 236 240;
    --color-muted: 150 162 172;
    --color-line: 55 68 78;
    --color-brand: 90 190 175;
    --color-accent: 230 160 80;
    --color-success: 110 195 155;
    --shadow-soft: 0 18px 50px rgb(0 0 0 / 0.35);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    text-size-adjust: 100%;
}

body.site {
    min-height: 100vh;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: rgb(var(--color-ink));
    background:
        radial-gradient(circle at 8% 0%, rgb(var(--color-brand) / 0.11), transparent 28rem),
        linear-gradient(180deg, rgb(var(--color-canvas)), rgb(var(--color-surface)));
    text-rendering: optimizeLegibility;
}

::selection { background: rgb(var(--color-accent) / 0.24); }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
img, svg { display: block; max-width: 100%; }
:focus-visible { outline: 3px solid rgb(var(--color-accent) / 0.55); outline-offset: 3px; }

/* —— Header —— */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    border-bottom: 1px solid rgb(var(--color-line) / 0.8);
    background: rgb(var(--color-surface) / 0.88);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transition: transform 0.28s var(--ease), box-shadow var(--dur) ease, background var(--dur) ease;
}

.site-header.is-scrolled {
    box-shadow: 0 8px 24px rgb(20 40 50 / 0.06);
}

.site-header.is-hidden {
    transform: translateY(-110%);
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -3.5rem;
    z-index: calc(var(--z-header) + 5);
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius-md);
    background: rgb(var(--color-brand));
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
}

.skip-link:focus {
    top: 0.75rem;
    outline: none;
}

:root[data-theme="dark"] .skip-link { color: #122018; }

.site-header-inner {
    max-width: var(--max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1rem;
}

@media (min-width: 640px) { .site-header-inner { padding-inline: 1.5rem; } }
@media (min-width: 1024px) { .site-header-inner { padding-inline: 2rem; } }

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
    color: rgb(var(--color-ink));
}

.site-logo {
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
    color: rgb(var(--color-brand));
    transition: transform var(--dur) var(--ease);
}

.site-brand:hover .site-logo { transform: rotate(-6deg) scale(1.04); }

.site-brand-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
    line-height: 1.15;
}

.site-brand-cn {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.site-brand-en {
    font-family: var(--font-sans);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgb(var(--color-muted));
}

.site-logo-tile {
    fill: rgb(var(--color-canvas));
}

.site-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.site-nav {
    display: none;
    align-items: center;
    gap: 0.25rem;
}

@media (min-width: 900px) { .site-nav { display: flex; } }

.site-nav-item {
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgb(var(--color-muted));
    transition: background var(--dur) ease, color var(--dur) ease;
}

.site-nav-item:hover,
.site-nav-item.active {
    background: rgb(var(--color-elevated));
    color: rgb(var(--color-ink));
}

.site-nav-item.active { font-weight: 600; }

.site-search-toggle,
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: rgb(var(--color-ink));
    transition: background var(--dur) ease, border-color var(--dur) ease;
}

.site-search-toggle:hover,
.theme-toggle:hover {
    background: rgb(var(--color-elevated));
}

.theme-toggle { width: 2.5rem; height: 2.5rem; padding: 0; }
.theme-toggle svg { width: 1.1rem; height: 1.1rem; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-drawer-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    padding: 0.55rem;
}

@media (min-width: 900px) { .nav-drawer-toggle { display: none; } }

.nav-drawer-toggle span {
    display: block;
    height: 2px;
    background: rgb(var(--color-ink));
    border-radius: 2px;
    transition: transform var(--dur) var(--ease), opacity var(--dur) ease;
}

.nav-drawer-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-drawer-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-drawer-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Search panel */
.search-panel {
    border-top: 1px solid rgb(var(--color-line) / 0.8);
    padding: 0.75rem 1rem 1rem;
    animation: search-in 0.28s var(--ease);
}

@media (min-width: 640px) { .search-panel { padding-inline: 1.5rem; } }
@media (min-width: 1024px) { .search-panel { padding-inline: 2rem; } }

.search-panel[hidden] { display: none !important; }

@keyframes search-in {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

.search-panel-inner {
    max-width: var(--max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-elevated));
    box-shadow: var(--shadow-soft);
}

.search-panel-inner:focus-within {
    border-color: rgb(var(--color-brand) / 0.55);
}

.search-icon {
    width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
    color: rgb(var(--color-muted));
}

#searchInput {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.95rem;
}

.search-kbd {
    display: none;
    padding: 0.15rem 0.4rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: 0.25rem;
    font-size: 0.7rem;
    color: rgb(var(--color-muted));
}

@media (min-width: 768px) { .search-kbd { display: inline-block; } }

.search-clear {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 999px;
    color: rgb(var(--color-muted));
}

.search-clear:hover { background: rgb(var(--color-canvas)); color: rgb(var(--color-ink)); }

.search-btn {
    border-radius: var(--radius-md);
    padding: 0.4rem 0.85rem;
    background: rgb(var(--color-brand));
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
}

:root[data-theme="dark"] .search-btn { color: #122018; }

/* —— Main —— */
.site-main {
    max-width: var(--max);
    margin: 0 auto;
    padding: 2.5rem 1rem;
}

@media (min-width: 640px) { .site-main { padding-inline: 1.5rem; } }
@media (min-width: 1024px) { .site-main { padding-inline: 2rem; } }

/* Hero */
.hero {
    display: grid;
    gap: 2rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid rgb(var(--color-line));
}

@media (min-width: 1024px) {
    .hero {
        grid-template-columns: minmax(0, 1fr) 22rem;
        align-items: end;
    }
}

.hero[hidden] { display: none !important; }

.hero-eyebrow {
    margin-bottom: 1rem;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgb(var(--color-brand));
}

.hero-title {
    max-width: 56rem;
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 900;
    line-height: 1.16;
    color: rgb(var(--color-ink));
}

.hero-lead {
    margin-top: 1.25rem;
    max-width: 42rem;
    font-size: 1.05rem;
    line-height: 2;
    color: rgb(var(--color-muted));
}

.hero-note {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

.featured-card {
    display: block;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    background: rgb(var(--color-elevated));
    padding: 1.25rem;
    box-shadow: var(--shadow-soft);
    transition: border-color var(--dur) ease, transform var(--dur) var(--ease);
}

.featured-card:hover {
    border-color: rgb(var(--color-brand));
    transform: translateY(-2px);
}

.featured-card[hidden] { display: none !important; }

.featured-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgb(var(--color-accent));
}

.featured-title {
    margin-top: 0.75rem;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.25;
}

.featured-desc {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.6;
    color: rgb(var(--color-muted));
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* FAQ strip */
.faq-strip {
    display: grid;
    gap: 1rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid rgb(var(--color-line));
    font-size: 0.875rem;
    line-height: 1.6;
    color: rgb(var(--color-muted));
}

@media (min-width: 1024px) {
    .faq-strip { grid-template-columns: 1.05fr 1.05fr 0.9fr; }
}

.faq-strip h2 {
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: rgb(var(--color-ink));
}

/* Content layout */
.content-layout {
    display: grid;
    gap: 2.5rem;
    padding-top: 2rem;
}

@media (min-width: 1024px) {
    .content-layout {
        grid-template-columns: minmax(0, 1fr) 20rem;
    }
}

.feed-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.feed-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
}

.feed-meta {
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

.feed-meta-sep { margin: 0 0.35rem; }

.sort-select {
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    background: rgb(var(--color-elevated));
    padding: 0.45rem 0.75rem;
    font-size: 0.875rem;
}

.feed-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transition: opacity var(--dur) ease;
}

.feed-list.is-updating { opacity: 0.45; }

/* Post cards */
.post-card {
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-surface));
    padding: 1.25rem;
    box-shadow: var(--shadow-soft);
    transition: border-color var(--dur) ease, transform var(--dur) var(--ease);
    cursor: pointer;
}

@media (min-width: 768px) { .post-card { padding: 1.5rem; } }

.post-card:hover {
    border-color: rgb(var(--color-brand) / 0.7);
    transform: translateY(-2px);
}

.post-card-grid {
    display: grid;
    gap: 1.25rem;
}

@media (min-width: 768px) {
    .post-card-grid {
        grid-template-columns: 14rem minmax(0, 1fr);
        align-items: start;
    }
}

.post-cover {
    overflow: hidden;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background:
        linear-gradient(145deg, rgb(var(--color-brand) / 0.12), rgb(var(--color-accent) / 0.08)),
        rgb(var(--color-elevated));
    aspect-ratio: 4 / 3;
    display: grid;
    place-items: center;
}

.post-cover svg {
    width: 4.5rem;
    height: 4.5rem;
    color: rgb(var(--color-brand));
    transition: transform 0.3s var(--ease);
}

.post-cover .app-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
    transition: transform 0.3s var(--ease);
}

.post-card:hover .post-cover .app-icon-img,
.post-card:hover .post-cover svg {
    transform: scale(1.06);
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgb(var(--color-muted));
}

.post-title {
    font-family: var(--font-serif);
    font-size: clamp(1.35rem, 2.5vw, 1.875rem);
    font-weight: 700;
    line-height: 1.25;
    color: rgb(var(--color-ink));
}

.post-card:hover .post-title {
    color: rgb(var(--color-brand));
    text-decoration: underline;
    text-underline-offset: 4px;
}

.post-desc {
    margin-top: 0.75rem;
    font-size: 1rem;
    line-height: 1.75;
    color: rgb(var(--color-muted));
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.post-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-download,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border-radius: var(--radius-md);
    padding: 0.45rem 0.9rem;
    font-size: 0.875rem;
    font-weight: 600;
    transition: background var(--dur) ease, border-color var(--dur) ease, color var(--dur) ease;
}

.btn-download {
    background: rgb(var(--color-brand));
    color: #fff;
}

:root[data-theme="dark"] .btn-download { color: #122018; }

.btn-download:hover { filter: brightness(1.06); }

.btn-ghost {
    border: 1px solid rgb(var(--color-line));
    color: rgb(var(--color-ink));
}

.btn-ghost:hover {
    border-color: rgb(var(--color-brand) / 0.45);
    background: rgb(var(--color-elevated));
}

.search-highlight {
    background: rgb(var(--color-accent) / 0.25);
    color: inherit;
    border-radius: 2px;
    padding: 0 2px;
}

/* Tags / sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 1024px) {
    .sidebar {
        position: sticky;
        top: 9rem;
        align-self: start;
    }
}

.sidebar-block {
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-elevated));
    padding: 1.25rem;
    box-shadow: var(--shadow-soft);
}

.sidebar-title {
    margin-bottom: 0.85rem;
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 700;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: 9999px;
    background: rgb(var(--color-surface));
    padding: 0.38rem 0.8rem;
    color: rgb(var(--color-muted));
    font-size: 0.875rem;
    line-height: 1;
    transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.tag-chip:hover {
    border-color: rgb(var(--color-brand) / 0.45);
    color: rgb(var(--color-ink));
    transform: translateY(-1px);
}

.tag-chip.active {
    border-color: rgb(var(--color-brand) / 0.55);
    background: rgb(var(--color-brand) / 0.12);
    color: rgb(var(--color-brand));
    font-weight: 600;
}

.tag-chip[hidden] { display: none !important; }

.tag-chip-sm { padding: 0.28rem 0.62rem; font-size: 0.75rem; }

.tag-chip-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.45rem;
    height: 1.45rem;
    padding: 0 0.38rem;
    border-radius: 9999px;
    background: rgb(var(--color-brand) / 0.12);
    color: rgb(var(--color-brand));
    font-size: 0.72rem;
    font-weight: 700;
}

/* Skeleton */
.skeleton-grid {
    display: none;
    flex-direction: column;
    gap: 1.25rem;
}

.skeleton-card {
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-surface));
    padding: 1.25rem;
    display: grid;
    gap: 1rem;
}

@media (min-width: 768px) {
    .skeleton-card { grid-template-columns: 14rem 1fr; }
}

.skeleton-banner,
.skeleton-line,
.skeleton-btn {
    border-radius: var(--radius-md);
    background: linear-gradient(90deg, rgb(var(--color-line) / 0.45), rgb(var(--color-line) / 0.2), rgb(var(--color-line) / 0.45));
    background-size: 200% 100%;
    animation: shimmer 1.2s linear infinite;
}

.skeleton-banner { aspect-ratio: 4/3; }
.skeleton-line { height: 0.85rem; margin-bottom: 0.65rem; }
.skeleton-line.short { width: 30%; }
.skeleton-line.medium { width: 55%; }
.skeleton-line.long { width: 85%; }
.skeleton-btn { width: 5rem; height: 2rem; margin-top: 0.5rem; }

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Empty */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    border: 1px dashed rgb(var(--color-line));
    border-radius: var(--radius-lg);
    color: rgb(var(--color-muted));
}

.empty-state h3 {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    color: rgb(var(--color-ink));
    margin-bottom: 0.5rem;
}

.btn-reset {
    margin-top: 1rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    font-weight: 600;
    background: rgb(var(--color-elevated));
}

.btn-reset:hover { border-color: rgb(var(--color-brand) / 0.5); }

/* Detail */
.app-detail {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}

.app-detail.is-visible {
    opacity: 1;
    transform: none;
}

.detail-toolbar { margin-bottom: 1.5rem; }

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    padding: 0.45rem 0.85rem;
    font-size: 0.875rem;
    font-weight: 600;
    background: rgb(var(--color-elevated));
}

.back-btn:hover { border-color: rgb(var(--color-brand) / 0.45); }

.store-detail {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.store-hero {
    display: grid;
    gap: 1.25rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-elevated));
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
}

@media (min-width: 768px) {
    .store-hero {
        grid-template-columns: auto 1fr auto;
        align-items: start;
    }
}

.store-hero-icon {
    width: 5rem;
    height: 5rem;
    border-radius: 1.1rem;
    border: 1px solid rgb(var(--color-line));
    background: rgb(var(--color-surface));
    display: grid;
    place-items: center;
    overflow: hidden;
}

.store-hero-icon svg {
    width: 3rem;
    height: 3rem;
    color: rgb(var(--color-brand));
}

.store-hero-icon .app-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.store-hero-name {
    font-family: var(--font-serif);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    line-height: 1.2;
}

.store-hero-title-row {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.65rem;
}

.store-hero-version {
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

.store-hero-tagline {
    margin-top: 0.65rem;
    color: rgb(var(--color-muted));
    line-height: 1.7;
}

.store-hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.85rem;
}

.store-badge {
    border: 1px solid rgb(var(--color-line));
    border-radius: 999px;
    padding: 0.25rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgb(var(--color-muted));
    background: rgb(var(--color-surface));
}

.store-badge-github { color: rgb(var(--color-brand)); }
.store-badge-hot { color: rgb(var(--color-accent)); }

.store-github-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.85rem;
    color: rgb(var(--color-brand));
    font-size: 0.875rem;
    font-weight: 600;
}

.store-github-link:hover { text-decoration: underline; }

.store-hero-action {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
}

@media (min-width: 768px) {
    .store-hero-action { align-items: flex-end; }
}

.store-hero-size {
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

.store-hero-action-row {
    display: flex;
    gap: 0.5rem;
}

.store-install-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border-radius: var(--radius-md);
    padding: 0.55rem 1.1rem;
    background: rgb(var(--color-brand));
    color: #fff;
    font-weight: 600;
}

:root[data-theme="dark"] .store-install-btn { color: #122018; }

.store-share-btn,
.store-fav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    background: rgb(var(--color-surface));
    color: rgb(var(--color-muted));
    transition: border-color var(--dur) ease, color var(--dur) ease, background var(--dur) ease;
}

.store-share-btn:hover,
.store-fav-btn:hover {
    border-color: rgb(var(--color-brand) / 0.45);
    color: rgb(var(--color-brand));
}

.store-fav-btn.is-active {
    border-color: rgb(var(--color-accent) / 0.55);
    color: rgb(var(--color-accent));
    background: rgb(var(--color-accent) / 0.1);
}

.store-section-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.85rem;
}

.detail-intro-block {
    margin-top: 0.25rem;
}

.store-intro-text {
    color: rgb(var(--color-muted));
    line-height: 1.8;
    margin: 0;
}

.feature-list {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    display: grid;
    gap: 0.55rem;
}

.feature-list li {
    position: relative;
    padding: 0.65rem 0.9rem 0.65rem 1.15rem;
    border-left: 3px solid rgb(var(--color-brand));
    background: rgb(var(--color-surface));
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: rgb(var(--color-ink));
    font-size: 0.95rem;
    line-height: 1.5;
}

.feature-list li:nth-child(2) { border-left-color: #3b82f6; }
.feature-list li:nth-child(3) { border-left-color: #10b981; }
.feature-list li:nth-child(4) { border-left-color: #8b5cf6; }
.feature-list li:nth-child(5) { border-left-color: #f97316; }

.store-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
    gap: 0.75rem;
}

.store-info-item {
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    background: rgb(var(--color-elevated));
    padding: 0.85rem 1rem;
}

.store-info-label {
    display: block;
    font-size: 0.75rem;
    color: rgb(var(--color-muted));
    margin-bottom: 0.25rem;
}

.store-info-value { font-weight: 600; }

/* About */
.about-section {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}

.about-section.is-visible,
.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: none;
}

.about-card {
    max-width: 48rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-elevated));
    padding: 2rem;
    box-shadow: var(--shadow-soft);
}

.about-card h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    font-weight: 700;
    margin: 0.5rem 0 1rem;
}

.about-lead {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgb(var(--color-muted));
    margin-bottom: 0.85rem;
}

.about-card > p {
    color: rgb(var(--color-muted));
    line-height: 1.8;
}

.about-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgb(var(--color-line));
}

.stat-item { display: flex; flex-direction: column; gap: 0.25rem; }
.stat-num {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: rgb(var(--color-brand));
}
.stat-label { font-size: 0.875rem; color: rgb(var(--color-muted)); }
.stat-divider {
    width: 1px;
    background: rgb(var(--color-line));
    align-self: stretch;
}

/* Footer */
.footer {
    margin-top: 2rem;
    border-top: 1px solid rgb(var(--color-line));
    background: rgb(var(--color-surface) / 0.7);
}

.footer-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 2rem 1rem 2.5rem;
}

@media (min-width: 640px) { .footer-inner { padding-inline: 1.5rem; } }
@media (min-width: 1024px) { .footer-inner { padding-inline: 2rem; } }

.footer-brand p {
    margin-top: 0.5rem;
    color: rgb(var(--color-muted));
    font-size: 0.875rem;
}

.footer-logo { pointer-events: none; }

.footer-bottom {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgb(var(--color-line));
    font-size: 0.8rem;
    color: rgb(var(--color-muted));
}

/* Mobile drawer */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: var(--z-drawer);
    width: min(20rem, 88vw);
    height: 100%;
    background: rgb(var(--color-elevated));
    border-left: 1px solid rgb(var(--color-line));
    transform: translateX(105%);
    transition: transform 0.3s var(--ease);
    padding: 1rem;
}

.mobile-drawer.is-open { transform: none; }

.mobile-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.mobile-drawer-title {
    font-family: var(--font-serif);
    font-weight: 700;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mobile-nav-item {
    text-align: left;
    border-radius: var(--radius-md);
    padding: 0.75rem 0.85rem;
    color: rgb(var(--color-muted));
    font-weight: 500;
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    background: rgb(var(--color-surface));
    color: rgb(var(--color-ink));
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-drawer) - 1);
    background: rgb(0 0 0 / 0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.drawer-overlay.is-visible {
    opacity: 1;
    pointer-events: auto;
}

/* Back to top */
.back-to-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 40;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: 999px;
    background: rgb(var(--color-elevated) / 0.94);
    color: rgb(var(--color-brand));
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transform: translateY(0.75rem);
    transition: opacity var(--dur) ease, transform var(--dur) var(--ease);
    backdrop-filter: blur(10px);
}

.back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: none;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.modal.is-visible { opacity: 1; }

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgb(0 0 0 / 0.45);
}

.modal-content {
    position: relative;
    width: min(28rem, 100%);
    max-height: min(85vh, 40rem);
    overflow: auto;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-elevated));
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
    transform: translateY(10px) scale(0.98);
    transition: transform 0.28s var(--ease);
}

.modal.is-visible .modal-content {
    transform: none;
}

.modal-close {
    position: absolute;
    top: 0.85rem;
    right: 0.85rem;
    width: 2rem;
    height: 2rem;
    display: grid;
    place-items: center;
    border-radius: 999px;
    color: rgb(var(--color-muted));
}

.modal-close:hover { background: rgb(var(--color-surface)); }

.modal-header {
    display: flex;
    gap: 0.85rem;
    align-items: center;
    margin-bottom: 1.25rem;
    padding-right: 2rem;
}

.modal-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.85rem;
    border: 1px solid rgb(var(--color-line));
    background: rgb(var(--color-surface));
    display: grid;
    place-items: center;
    overflow: hidden;
    flex-shrink: 0;
}

.modal-icon svg {
    width: 1.75rem;
    height: 1.75rem;
    color: rgb(var(--color-brand));
}

.modal-icon .app-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.modal-header h3 {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 700;
}

.modal-app-name {
    margin-top: 0.2rem;
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

.download-sources-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.download-source-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    padding: 0.75rem;
    background: rgb(var(--color-surface));
}

.source-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.5rem;
    display: grid;
    place-items: center;
    color: #fff;
    font-weight: 700;
    flex-shrink: 0;
}

.tag-quark { background: var(--c-quark); }
.tag-baidu { background: var(--c-baidu); }

.download-source-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.source-name { font-weight: 600; font-size: 0.9rem; }
.source-hint {
    font-size: 0.75rem;
    color: rgb(var(--color-muted));
}

.source-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.download-source-go {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    border-radius: var(--radius-md);
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgb(var(--color-brand));
    color: #fff;
}

:root[data-theme="dark"] .download-source-go { color: #122018; }

.modal-empty {
    padding: 1rem;
    text-align: center;
    color: rgb(var(--color-muted));
    font-size: 0.9rem;
    border: 1px dashed rgb(var(--color-line));
    border-radius: var(--radius-md);
}

/* Toast */
.toast-container {
    position: fixed;
    left: 50%;
    bottom: 1.5rem;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: 999px;
    background: rgb(var(--color-elevated));
    color: rgb(var(--color-ink));
    padding: 0.65rem 1rem;
    box-shadow: var(--shadow-soft);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
}

.app-icon-img-broken { opacity: 0.35; }

/* Featured extras */
.featured-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem;
    margin-top: 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: rgb(var(--color-muted));
}

.featured-meta-sep { opacity: 0.5; }

.featured-cta {
    display: inline-block;
    margin-top: 0.85rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: rgb(var(--color-brand));
}

/* Search suggestions */
.search-panel { position: relative; }

.search-suggestions {
    max-width: var(--max);
    margin: 0.65rem auto 0;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-elevated));
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.search-suggestions[hidden] { display: none !important; }

.search-suggestion {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid rgb(var(--color-line) / 0.7);
    transition: background var(--dur) ease;
}

.search-suggestion:last-child { border-bottom: none; }

.search-suggestion:hover,
.search-suggestion.is-active {
    background: rgb(var(--color-surface));
}

.search-suggestion-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.55rem;
    border: 1px solid rgb(var(--color-line));
    background: rgb(var(--color-surface));
    display: grid;
    place-items: center;
    flex-shrink: 0;
    overflow: hidden;
    color: rgb(var(--color-brand));
}

.search-suggestion-icon svg {
    width: 1.25rem;
    height: 1.25rem;
}

.search-suggestion-icon .app-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.search-suggestion-body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.search-suggestion-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-suggestion-meta {
    font-size: 0.75rem;
    color: rgb(var(--color-muted));
}

.search-suggestion-empty {
    padding: 0.9rem 1rem;
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

/* Active filters */
.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.active-filters[hidden] { display: none !important; }

.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: 999px;
    background: rgb(var(--color-elevated));
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: rgb(var(--color-ink));
    transition: border-color var(--dur) ease, background var(--dur) ease;
}

.filter-pill:hover {
    border-color: rgb(var(--color-brand) / 0.5);
    background: rgb(var(--color-brand) / 0.08);
}

.filter-pill-clear {
    color: rgb(var(--color-muted));
    font-weight: 500;
}

/* Post reveal */
.post-card {
    opacity: 0;
    transform: translateY(10px);
    transition:
        opacity 0.4s var(--ease),
        transform 0.4s var(--ease),
        border-color var(--dur) ease;
    transition-delay: var(--reveal-delay, 0ms);
}

.post-card.is-revealed {
    opacity: 1;
    transform: none;
}

.post-card.is-revealed:hover {
    transform: translateY(-2px);
}

.tag-chip-action { cursor: pointer; }
.tag-chip-action:hover {
    border-color: rgb(var(--color-brand) / 0.55);
    color: rgb(var(--color-brand));
}

/* Pagination */
.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    margin-top: 1.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgb(var(--color-line));
}

.pagination[hidden] { display: none !important; }

.page-nums {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.3rem;
}

.page-btn,
.page-num {
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    background: rgb(var(--color-elevated));
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: rgb(var(--color-ink));
    transition: border-color var(--dur) ease, background var(--dur) ease, color var(--dur) ease;
}

.page-btn:hover:not(:disabled),
.page-num:hover {
    border-color: rgb(var(--color-brand) / 0.45);
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.page-num.is-active {
    border-color: rgb(var(--color-brand) / 0.55);
    background: rgb(var(--color-brand) / 0.12);
    color: rgb(var(--color-brand));
}

.page-ellipsis {
    padding: 0 0.2rem;
    color: rgb(var(--color-muted));
}

/* Hot list sidebar */
.hot-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.hot-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    width: 100%;
    padding: 0.55rem;
    border-radius: var(--radius-md);
    text-align: left;
    transition: background var(--dur) ease;
}

.hot-item:hover { background: rgb(var(--color-surface)); }

.hot-item-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 0.45rem;
    border: 1px solid rgb(var(--color-line));
    background: rgb(var(--color-surface));
    display: grid;
    place-items: center;
    overflow: hidden;
    flex-shrink: 0;
    color: rgb(var(--color-brand));
}

.hot-item-icon svg {
    width: 1.1rem;
    height: 1.1rem;
}

.hot-item-icon .app-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hot-item-body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.hot-item-name {
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hot-item-meta {
    font-size: 0.75rem;
    color: rgb(var(--color-muted));
}

.hot-empty {
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

/* Detail breadcrumb + related */
.detail-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
    color: rgb(var(--color-muted));
}

.crumb-link {
    color: rgb(var(--color-brand));
    font-weight: 600;
}

.crumb-link:hover { text-decoration: underline; }

.crumb-current {
    color: rgb(var(--color-ink));
    font-weight: 600;
}

.detail-mirrors { margin-top: 0.25rem; }

.related-grid {
    display: grid;
    gap: 0.75rem;
}

@media (min-width: 640px) {
    .related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.related-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    text-align: left;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-lg);
    background: rgb(var(--color-elevated));
    padding: 0.85rem;
    box-shadow: var(--shadow-soft);
    transition: border-color var(--dur) ease, transform var(--dur) var(--ease);
}

.related-card:hover {
    border-color: rgb(var(--color-brand) / 0.6);
    transform: translateY(-2px);
}

.related-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.65rem;
    border: 1px solid rgb(var(--color-line));
    background: rgb(var(--color-surface));
    display: grid;
    place-items: center;
    overflow: hidden;
    flex-shrink: 0;
    color: rgb(var(--color-brand));
}

.related-icon svg {
    width: 1.35rem;
    height: 1.35rem;
}

.related-icon .app-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.related-body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.related-name {
    font-weight: 700;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.related-desc {
    font-size: 0.75rem;
    color: rgb(var(--color-muted));
}

/* Empty visual */
.empty-visual {
    width: 4.5rem;
    height: 4.5rem;
    margin: 0 auto 1rem;
    color: rgb(var(--color-brand) / 0.7);
}

.empty-visual svg { width: 100%; height: 100%; }

/* Footer links */
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    margin-top: 1.25rem;
}

.footer-links button {
    font-size: 0.875rem;
    font-weight: 600;
    color: rgb(var(--color-brand));
}

.footer-links button:hover { text-decoration: underline; }

/* Mobile quick filters */
.mobile-filters {
    display: none;
    gap: 0.5rem;
    margin-bottom: 1rem;
    overflow-x: auto;
    padding-bottom: 0.25rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.mobile-filters::-webkit-scrollbar { display: none; }

@media (max-width: 1023px) {
    .mobile-filters {
        display: flex;
    }
}

.mobile-filter-chip {
    flex: 0 0 auto;
    border: 1px solid rgb(var(--color-line));
    border-radius: 999px;
    background: rgb(var(--color-elevated));
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: rgb(var(--color-muted));
    white-space: nowrap;
    transition: border-color var(--dur) ease, color var(--dur) ease, background var(--dur) ease;
}

.mobile-filter-chip:hover,
.mobile-filter-chip.active {
    border-color: rgb(var(--color-brand) / 0.5);
    color: rgb(var(--color-brand));
    background: rgb(var(--color-brand) / 0.1);
}

/* Card favorite */
.btn-icon-fav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: 1px solid rgb(var(--color-line));
    border-radius: var(--radius-md);
    color: rgb(var(--color-muted));
    background: rgb(var(--color-elevated));
    transition: border-color var(--dur) ease, color var(--dur) ease, background var(--dur) ease, transform var(--dur) var(--ease);
}

.btn-icon-fav:hover {
    border-color: rgb(var(--color-accent) / 0.5);
    color: rgb(var(--color-accent));
}

.btn-icon-fav.is-active {
    border-color: rgb(var(--color-accent) / 0.55);
    color: rgb(var(--color-accent));
    background: rgb(var(--color-accent) / 0.12);
}

.btn-icon-fav:active { transform: scale(0.94); }

.post-card:focus-visible {
    outline: 3px solid rgb(var(--color-accent) / 0.45);
    outline-offset: 3px;
}

.btn-download:active,
.btn-ghost:active,
.store-install-btn:active {
    transform: scale(0.97);
}

/* Sticky detail CTA (mobile) */
.detail-sticky-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
    border-top: 1px solid rgb(var(--color-line));
    background: rgb(var(--color-elevated) / 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 -10px 30px rgb(20 40 50 / 0.08);
    transform: translateY(0);
    transition: transform 0.28s var(--ease), opacity 0.28s ease;
}

.detail-sticky-bar[hidden] {
    display: block !important;
    transform: translateY(110%);
    opacity: 0;
    pointer-events: none;
}

.detail-sticky-inner {
    max-width: var(--max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
}

.detail-sticky-info {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.detail-sticky-info strong {
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.detail-sticky-info span {
    font-size: 0.75rem;
    color: rgb(var(--color-muted));
}

body.is-detail-open .back-to-top {
    bottom: 5.5rem;
}

@media (min-width: 768px) {
    .detail-sticky-bar { display: none !important; }
    body.is-detail-open .back-to-top { bottom: 1.25rem; }
}

/* Press / hover micro polish */
.tag-chip:active,
.mobile-filter-chip:active,
.filter-pill:active,
.page-btn:active,
.page-num:active {
    transform: scale(0.96);
}

.hot-item:active,
.related-card:active,
.search-suggestion:active {
    transform: scale(0.985);
}

.toast {
    animation: toast-in 0.28s var(--ease);
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
    .post-actions {
        width: 100%;
    }

    .post-actions .btn-download {
        flex: 1;
        justify-content: center;
    }

    .site-main {
        padding-top: 1.5rem;
        padding-bottom: 2rem;
    }

    .hero-title {
        font-size: 1.45rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .post-card {
        opacity: 1;
        transform: none;
    }
}